/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:23:09,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:23:09,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:23:09,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:23:09,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:23:09,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:23:09,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:23:09,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:23:09,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:23:09,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:23:09,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:23:09,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:23:09,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:23:09,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:23:09,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:23:09,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:23:09,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:23:09,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:23:09,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:23:09,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:23:09,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:23:09,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:23:09,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:23:09,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:23:09,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:23:09,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:23:09,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:23:09,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:23:09,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:23:09,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:23:09,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:23:09,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:23:09,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:23:09,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:23:09,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:23:09,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:23:09,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:23:09,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:23:09,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:23:09,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:23:09,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:23:09,131 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 02:23:09,153 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:23:09,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:23:09,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:23:09,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:23:09,155 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:23:09,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:23:09,155 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:23:09,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:23:09,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:23:09,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:23:09,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:23:09,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:23:09,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:23:09,157 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:23:09,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:23:09,157 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:23:09,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:23:09,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:23:09,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:23:09,158 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:23:09,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:23:09,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:23:09,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:23:09,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:23:09,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:23:09,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:23:09,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:23:09,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:23:09,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:23:09,160 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:23:09,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:23:09,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:23:09,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:23:09,473 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:23:09,475 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:23:09,476 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c [2020-08-22 02:23:09,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b932c0b8b/4ca9c7d7d4df4892b3195f2038fd4e89/FLAG959e2d396 [2020-08-22 02:23:10,016 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:23:10,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c [2020-08-22 02:23:10,036 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b932c0b8b/4ca9c7d7d4df4892b3195f2038fd4e89/FLAG959e2d396 [2020-08-22 02:23:10,437 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b932c0b8b/4ca9c7d7d4df4892b3195f2038fd4e89 [2020-08-22 02:23:10,447 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:23:10,448 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:23:10,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:23:10,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:23:10,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:23:10,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:23:10" (1/1) ... [2020-08-22 02:23:10,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0bc5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:23:10, skipping insertion in model container [2020-08-22 02:23:10,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:23:10" (1/1) ... [2020-08-22 02:23:10,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:23:10,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:23:10,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:23:10,711 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:23:10,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:23:10,853 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:23:10,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:23:10 WrapperNode [2020-08-22 02:23:10,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:23:10,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:23:10,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:23:10,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:23:10,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:23:10" (1/1) ... [2020-08-22 02:23:10,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:23:10" (1/1) ... [2020-08-22 02:23:10,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:23:10" (1/1) ... [2020-08-22 02:23:10,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:23:10" (1/1) ... [2020-08-22 02:23:10,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:23:10" (1/1) ... [2020-08-22 02:23:10,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:23:10" (1/1) ... [2020-08-22 02:23:10,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:23:10" (1/1) ... [2020-08-22 02:23:10,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:23:10,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:23:10,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:23:10,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:23:10,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:23:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:23:10,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:23:10,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:23:10,967 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-22 02:23:10,967 INFO L138 BoogieDeclarations]: Found implementation of procedure update_fifo_q [2020-08-22 02:23:10,967 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2020-08-22 02:23:10,968 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2020-08-22 02:23:10,968 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2020-08-22 02:23:10,968 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2020-08-22 02:23:10,968 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2020-08-22 02:23:10,968 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-22 02:23:10,969 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-22 02:23:10,969 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-22 02:23:10,969 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-22 02:23:10,969 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-22 02:23:10,969 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-22 02:23:10,969 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-22 02:23:10,969 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-22 02:23:10,970 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-22 02:23:10,970 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-22 02:23:10,970 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:23:10,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:23:10,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:23:10,971 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-22 02:23:10,971 INFO L130 BoogieDeclarations]: Found specification of procedure update_fifo_q [2020-08-22 02:23:10,971 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2020-08-22 02:23:10,971 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2020-08-22 02:23:10,971 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2020-08-22 02:23:10,971 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2020-08-22 02:23:10,971 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2020-08-22 02:23:10,972 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-22 02:23:10,972 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-22 02:23:10,972 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-22 02:23:10,972 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-22 02:23:10,972 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-22 02:23:10,972 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-22 02:23:10,972 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-22 02:23:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-22 02:23:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-22 02:23:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-22 02:23:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:23:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:23:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:23:11,385 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:23:11,385 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 02:23:11,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:23:11 BoogieIcfgContainer [2020-08-22 02:23:11,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:23:11,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:23:11,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:23:11,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:23:11,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:23:10" (1/3) ... [2020-08-22 02:23:11,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507d69db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:23:11, skipping insertion in model container [2020-08-22 02:23:11,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:23:10" (2/3) ... [2020-08-22 02:23:11,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507d69db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:23:11, skipping insertion in model container [2020-08-22 02:23:11,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:23:11" (3/3) ... [2020-08-22 02:23:11,399 INFO L109 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-2.c [2020-08-22 02:23:11,410 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:23:11,417 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:23:11,436 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:23:11,461 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:23:11,461 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:23:11,461 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:23:11,461 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:23:11,462 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:23:11,462 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:23:11,462 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:23:11,462 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:23:11,487 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-08-22 02:23:11,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 02:23:11,497 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:23:11,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:23:11,499 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:23:11,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:23:11,505 INFO L82 PathProgramCache]: Analyzing trace with hash 742963907, now seen corresponding path program 1 times [2020-08-22 02:23:11,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:23:11,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898631144] [2020-08-22 02:23:11,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:23:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:11,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:23:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:11,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:23:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:12,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:23:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:12,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:23:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:12,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 02:23:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:12,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 02:23:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:12,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:23:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:12,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:23:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:12,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 02:23:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:12,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 02:23:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:12,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:23:12,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898631144] [2020-08-22 02:23:12,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:23:12,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 02:23:12,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901434592] [2020-08-22 02:23:12,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:23:12,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:23:12,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:23:12,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:23:12,241 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 10 states. [2020-08-22 02:23:14,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:23:14,790 INFO L93 Difference]: Finished difference Result 552 states and 918 transitions. [2020-08-22 02:23:14,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 02:23:14,793 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-08-22 02:23:14,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:23:14,812 INFO L225 Difference]: With dead ends: 552 [2020-08-22 02:23:14,812 INFO L226 Difference]: Without dead ends: 416 [2020-08-22 02:23:14,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-22 02:23:14,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-08-22 02:23:14,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 234. [2020-08-22 02:23:14,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-08-22 02:23:14,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 306 transitions. [2020-08-22 02:23:14,937 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 306 transitions. Word has length 70 [2020-08-22 02:23:14,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:23:14,938 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 306 transitions. [2020-08-22 02:23:14,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:23:14,938 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 306 transitions. [2020-08-22 02:23:14,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 02:23:14,942 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:23:14,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:23:14,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:23:14,943 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:23:14,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:23:14,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1190139517, now seen corresponding path program 1 times [2020-08-22 02:23:14,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:23:14,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765816095] [2020-08-22 02:23:14,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:23:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:15,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:23:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:15,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:23:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:15,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:23:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:15,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:23:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:15,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 02:23:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:15,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 02:23:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:15,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:23:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:15,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:23:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:15,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 02:23:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:15,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 02:23:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:15,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:23:15,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765816095] [2020-08-22 02:23:15,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:23:15,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 02:23:15,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253637996] [2020-08-22 02:23:15,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:23:15,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:23:15,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:23:15,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:23:15,222 INFO L87 Difference]: Start difference. First operand 234 states and 306 transitions. Second operand 10 states. [2020-08-22 02:23:17,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:23:17,867 INFO L93 Difference]: Finished difference Result 805 states and 1159 transitions. [2020-08-22 02:23:17,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 02:23:17,868 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-08-22 02:23:17,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:23:17,875 INFO L225 Difference]: With dead ends: 805 [2020-08-22 02:23:17,875 INFO L226 Difference]: Without dead ends: 598 [2020-08-22 02:23:17,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2020-08-22 02:23:17,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-08-22 02:23:17,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 360. [2020-08-22 02:23:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-08-22 02:23:17,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 476 transitions. [2020-08-22 02:23:17,959 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 476 transitions. Word has length 70 [2020-08-22 02:23:17,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:23:17,960 INFO L479 AbstractCegarLoop]: Abstraction has 360 states and 476 transitions. [2020-08-22 02:23:17,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:23:17,960 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 476 transitions. [2020-08-22 02:23:17,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 02:23:17,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:23:17,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:23:17,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:23:17,971 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:23:17,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:23:17,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1543227899, now seen corresponding path program 1 times [2020-08-22 02:23:17,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:23:17,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067606227] [2020-08-22 02:23:17,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:23:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:18,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:23:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:18,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:23:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:18,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:23:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:18,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:23:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:18,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 02:23:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:18,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 02:23:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:18,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:23:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:18,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:23:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:18,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 02:23:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:18,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 02:23:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:18,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:23:18,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067606227] [2020-08-22 02:23:18,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:23:18,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 02:23:18,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215508577] [2020-08-22 02:23:18,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 02:23:18,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:23:18,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 02:23:18,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:23:18,244 INFO L87 Difference]: Start difference. First operand 360 states and 476 transitions. Second operand 11 states. [2020-08-22 02:23:19,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:23:19,814 INFO L93 Difference]: Finished difference Result 858 states and 1207 transitions. [2020-08-22 02:23:19,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 02:23:19,814 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-08-22 02:23:19,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:23:19,822 INFO L225 Difference]: With dead ends: 858 [2020-08-22 02:23:19,822 INFO L226 Difference]: Without dead ends: 541 [2020-08-22 02:23:19,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-08-22 02:23:19,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-08-22 02:23:19,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 365. [2020-08-22 02:23:19,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-08-22 02:23:19,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 479 transitions. [2020-08-22 02:23:19,889 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 479 transitions. Word has length 70 [2020-08-22 02:23:19,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:23:19,891 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 479 transitions. [2020-08-22 02:23:19,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 02:23:19,891 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 479 transitions. [2020-08-22 02:23:19,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 02:23:19,894 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:23:19,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:23:19,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:23:19,895 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:23:19,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:23:19,896 INFO L82 PathProgramCache]: Analyzing trace with hash 507756099, now seen corresponding path program 1 times [2020-08-22 02:23:19,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:23:19,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166159697] [2020-08-22 02:23:19,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:23:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:20,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:23:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:20,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:23:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:20,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:23:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:20,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:23:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:20,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 02:23:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:20,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 02:23:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:20,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:23:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:20,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:23:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:20,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 02:23:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:20,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 02:23:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:20,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:23:20,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166159697] [2020-08-22 02:23:20,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:23:20,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 02:23:20,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615151636] [2020-08-22 02:23:20,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:23:20,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:23:20,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:23:20,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:23:20,154 INFO L87 Difference]: Start difference. First operand 365 states and 479 transitions. Second operand 10 states. [2020-08-22 02:23:22,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:23:22,634 INFO L93 Difference]: Finished difference Result 1300 states and 1859 transitions. [2020-08-22 02:23:22,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 02:23:22,634 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-08-22 02:23:22,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:23:22,642 INFO L225 Difference]: With dead ends: 1300 [2020-08-22 02:23:22,642 INFO L226 Difference]: Without dead ends: 978 [2020-08-22 02:23:22,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2020-08-22 02:23:22,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2020-08-22 02:23:22,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 691. [2020-08-22 02:23:22,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-08-22 02:23:22,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 892 transitions. [2020-08-22 02:23:22,710 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 892 transitions. Word has length 70 [2020-08-22 02:23:22,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:23:22,711 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 892 transitions. [2020-08-22 02:23:22,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:23:22,711 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 892 transitions. [2020-08-22 02:23:22,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 02:23:22,712 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:23:22,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:23:22,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:23:22,713 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:23:22,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:23:22,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1263714876, now seen corresponding path program 1 times [2020-08-22 02:23:22,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:23:22,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878175283] [2020-08-22 02:23:22,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:23:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:22,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:23:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:22,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:23:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:22,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:23:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:22,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:23:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:22,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 02:23:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:22,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 02:23:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:22,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:23:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:22,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:23:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:22,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 02:23:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:22,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 02:23:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:22,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:23:22,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878175283] [2020-08-22 02:23:22,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:23:22,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 02:23:22,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638322317] [2020-08-22 02:23:22,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 02:23:22,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:23:22,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 02:23:22,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:23:22,938 INFO L87 Difference]: Start difference. First operand 691 states and 892 transitions. Second operand 11 states. [2020-08-22 02:23:24,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:23:24,642 INFO L93 Difference]: Finished difference Result 1616 states and 2202 transitions. [2020-08-22 02:23:24,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 02:23:24,643 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-08-22 02:23:24,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:23:24,651 INFO L225 Difference]: With dead ends: 1616 [2020-08-22 02:23:24,651 INFO L226 Difference]: Without dead ends: 968 [2020-08-22 02:23:24,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-22 02:23:24,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-08-22 02:23:24,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 706. [2020-08-22 02:23:24,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-08-22 02:23:24,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 904 transitions. [2020-08-22 02:23:24,771 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 904 transitions. Word has length 70 [2020-08-22 02:23:24,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:23:24,772 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 904 transitions. [2020-08-22 02:23:24,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 02:23:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 904 transitions. [2020-08-22 02:23:24,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 02:23:24,774 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:23:24,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:23:24,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:23:24,775 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:23:24,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:23:24,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1123166266, now seen corresponding path program 1 times [2020-08-22 02:23:24,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:23:24,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453030807] [2020-08-22 02:23:24,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:23:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:24,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:23:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:24,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:23:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:24,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:23:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:24,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:23:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:25,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 02:23:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:25,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 02:23:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:25,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:23:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:25,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:23:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:25,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 02:23:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:25,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 02:23:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:23:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:23:25,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453030807] [2020-08-22 02:23:25,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:23:25,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 02:23:25,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60491307] [2020-08-22 02:23:25,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:23:25,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:23:25,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:23:25,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:23:25,096 INFO L87 Difference]: Start difference. First operand 706 states and 904 transitions. Second operand 10 states. [2020-08-22 02:23:27,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:23:27,372 INFO L93 Difference]: Finished difference Result 1675 states and 2255 transitions. [2020-08-22 02:23:27,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 02:23:27,376 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-08-22 02:23:27,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:23:27,383 INFO L225 Difference]: With dead ends: 1675 [2020-08-22 02:23:27,384 INFO L226 Difference]: Without dead ends: 1111 [2020-08-22 02:23:27,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2020-08-22 02:23:27,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2020-08-22 02:23:27,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 722. [2020-08-22 02:23:27,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2020-08-22 02:23:27,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 913 transitions. [2020-08-22 02:23:27,450 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 913 transitions. Word has length 70 [2020-08-22 02:23:27,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:23:27,451 INFO L479 AbstractCegarLoop]: Abstraction has 722 states and 913 transitions. [2020-08-22 02:23:27,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:23:27,451 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 913 transitions. [2020-08-22 02:23:27,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 02:23:27,452 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:23:27,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:23:27,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:23:27,453 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:23:27,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:23:27,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1940814716, now seen corresponding path program 1 times [2020-08-22 02:23:27,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:23:27,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395620144] [2020-08-22 02:23:27,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:23:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:23:27,472 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:23:27,473 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:23:27,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:23:27,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:23:27 BoogieIcfgContainer [2020-08-22 02:23:27,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:23:27,504 INFO L168 Benchmark]: Toolchain (without parser) took 17055.63 ms. Allocated memory was 140.0 MB in the beginning and 442.5 MB in the end (delta: 302.5 MB). Free memory was 103.0 MB in the beginning and 146.3 MB in the end (delta: -43.3 MB). Peak memory consumption was 259.2 MB. Max. memory is 7.1 GB. [2020-08-22 02:23:27,505 INFO L168 Benchmark]: CDTParser took 0.70 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 02:23:27,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.11 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.8 MB in the beginning and 181.9 MB in the end (delta: -79.1 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-08-22 02:23:27,507 INFO L168 Benchmark]: Boogie Preprocessor took 48.57 ms. Allocated memory is still 202.4 MB. Free memory was 181.9 MB in the beginning and 178.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-22 02:23:27,508 INFO L168 Benchmark]: RCFGBuilder took 488.81 ms. Allocated memory is still 202.4 MB. Free memory was 178.7 MB in the beginning and 146.4 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. [2020-08-22 02:23:27,509 INFO L168 Benchmark]: TraceAbstraction took 16109.02 ms. Allocated memory was 202.4 MB in the beginning and 442.5 MB in the end (delta: 240.1 MB). Free memory was 146.4 MB in the beginning and 146.3 MB in the end (delta: 104.3 kB). Peak memory consumption was 240.2 MB. Max. memory is 7.1 GB. [2020-08-22 02:23:27,513 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 403.11 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.8 MB in the beginning and 181.9 MB in the end (delta: -79.1 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.57 ms. Allocated memory is still 202.4 MB. Free memory was 181.9 MB in the beginning and 178.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 488.81 ms. Allocated memory is still 202.4 MB. Free memory was 178.7 MB in the beginning and 146.4 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16109.02 ms. Allocated memory was 202.4 MB in the beginning and 442.5 MB in the end (delta: 240.1 MB). Free memory was 146.4 MB in the beginning and 146.3 MB in the end (delta: 104.3 kB). Peak memory consumption was 240.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] int q_buf_0 ; [L16] int q_free ; [L17] int q_read_ev ; [L18] int q_write_ev ; [L19] int q_req_up ; [L20] int q_ev ; [L41] int p_num_write ; [L42] int p_last_write ; [L43] int p_dw_st ; [L44] int p_dw_pc ; [L45] int p_dw_i ; [L46] int c_num_read ; [L47] int c_last_read ; [L48] int c_dr_st ; [L49] int c_dr_pc ; [L50] int c_dr_i ; [L154] static int a_t ; [L456] int __retres1 ; [L460] CALL init_model() [L442] q_free = 1 [L443] q_write_ev = 2 [L444] q_read_ev = q_write_ev [L445] p_num_write = 0 [L446] p_dw_pc = 0 [L447] p_dw_i = 1 [L448] c_num_read = 0 [L449] c_dr_pc = 0 [L450] c_dr_i = 1 [L460] RET init_model() [L461] CALL start_simulation() [L396] int kernel_st ; [L397] int tmp ; [L401] kernel_st = 0 [L402] CALL update_channels() [L212] COND FALSE !((int )q_req_up == 1) [L402] RET update_channels() [L403] CALL init_threads() [L227] COND TRUE (int )p_dw_i == 1 [L228] p_dw_st = 0 [L232] COND TRUE (int )c_dr_i == 1 [L233] c_dr_st = 0 [L403] RET init_threads() [L404] CALL fire_delta_events() [L265] COND FALSE !((int )q_read_ev == 0) [L270] COND FALSE !((int )q_write_ev == 0) [L404] RET fire_delta_events() [L405] CALL activate_threads() [L298] int tmp ; [L299] int tmp___0 ; [L303] CALL, EXPR is_do_write_p_triggered() [L52] int __retres1 ; [L55] COND FALSE !((int )p_dw_pc == 1) [L65] __retres1 = 0 [L67] return (__retres1); [L303] RET, EXPR is_do_write_p_triggered() [L303] tmp = is_do_write_p_triggered() [L305] COND FALSE !(\read(tmp)) [L311] CALL, EXPR is_do_read_c_triggered() [L71] int __retres1 ; [L74] COND FALSE !((int )c_dr_pc == 1) [L84] __retres1 = 0 [L86] return (__retres1); [L311] RET, EXPR is_do_read_c_triggered() [L311] tmp___0 = is_do_read_c_triggered() [L313] COND FALSE !(\read(tmp___0)) [L405] RET activate_threads() [L406] CALL reset_delta_events() [L283] COND FALSE !((int )q_read_ev == 1) [L288] COND FALSE !((int )q_write_ev == 1) [L406] RET reset_delta_events() [L409] COND TRUE 1 [L412] kernel_st = 1 [L413] CALL eval() [L323] int tmp ; [L324] int tmp___0 ; [L325] int tmp___1 ; [L329] COND TRUE 1 [L332] CALL, EXPR exists_runnable_thread() [L242] int __retres1 ; [L245] COND TRUE (int )p_dw_st == 0 [L246] __retres1 = 1 [L258] return (__retres1); [L332] RET, EXPR exists_runnable_thread() [L332] tmp___1 = exists_runnable_thread() [L334] COND TRUE \read(tmp___1) [L339] COND TRUE (int )p_dw_st == 0 [L341] tmp = __VERIFIER_nondet_int() [L343] COND FALSE !(\read(tmp)) [L349] CALL error() [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 20 procedures, 140 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 13.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 986 SDtfs, 3575 SDslu, 1134 SDs, 0 SdLazy, 8337 SolverSat, 2225 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 135 SyntacticMatches, 5 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=722occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 1534 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 490 NumberOfCodeBlocks, 490 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 414 ConstructedInterpolants, 0 QuantifiedInterpolants, 91356 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...